Currently, you can change the grid distance formula in the page settings as shown below. This dropdown tells Roll20 how to count diagonal distances on the grid. However, this setting doesn't carry over to new pages, so you have to pick it every time you add a page. The current workaround is duplicating old pages, but it would be nice if there were a way to choose a default setting for new pages, since it's unlikely to vary within a campaign.

It would make sense that this is a global setting, since like you said it is unlikely to vary within a campaign. Also, if at any point you decide to change the way you measure diagonals, then you would want to change it for all pages, not just new ones.

From your game page, click Settings -> Game Settings . Expand the arrow next to Game Default Settings . There you will find Page Defaults where you can set this (among other details) for all new pages. Set it and click the blue Save Defaults button.

I think Mark is asking for a button similar to [Update Default Settings] in the VTT to update all existing pages as opposed to the current implementation of the page settings only applying to new pages created after the change.

Rabulias said: From your game page, click Settings -> Game Settings . Expand the arrow next to Game Default Settings . There you will find Page Defaults where you can set this (among other details) for all new pages. Set it and click the blue Save Defaults button. Ah, I actually didn't know that was a thing, thanks! But Kyle G. is correct that I was looking for an update to existing pages. However, I have since dived into this and wrote a quick API script to do just that: //When adding a page (or loading the campaign), change properties to defaults
on("add:page", function(obj) {
obj.set("diagonaltype", "pythagorean");
});
Of course, this could also be easily expanded to other properties.